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Find the integral that represents the volume of the following solids: 1. below the surface z=1+xy...

Find the integral that represents the volume of the following solids:

1. below the surface z=1+xy and over the triangle with vertices (1,1), (4,1) and (3,2).

2. enclosed by the planes y=0, z=0, y=x and 6x+2y+3z=6

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